As one of its daily deals, Woot offers the refurbished Samsung 55" 4K 2160p WiFi LED-Backlit LCD Ultra HD Smart Television, model no. UN55KS800DFXZA, for $649.99 plus $5 for shipping. That's tied with last month's mention as the lowest price we've seen. (It's the best deal for a refurb today by $95.) It features a 3840x2160 native resolution (4K), WiFi, USB, Ethernet, Smart TV apps (Netflix, Amazon Instant Video, Android games, etc.), and four HDMI inputs. Deal ends today
A 90-day Woot warranty applies.